TARGET_ARCH=s390x TARGET_BASE_ARCH=s390x TARGET_WORDS_BIGENDIAN=y TARGET_SUPPORTS_MTTCG=y TARGET_XML_FILES= gdb-xml/s390x-core64.xml gdb-xml/s390-acr.xml gdb-xml/s390-fpr.xml gdb-xml/s390-vx.xml gdb-xml/s390-cr.xml gdb-xml/s390-virt.xml gdb-xml/s390-gs.xml